... FITS1
FITS, the ``Flexible Image Transport System'' is the de facto standard for the interchange of astronomical data.
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... value.2
It may also be known as the ``invalid'', ``flagged'' or even ``magic'' value, but the meaning is the same.
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... package.3
The Starlink application packages CCDPACK (SUN/139) and POLPACK (SUN/223) make extensive use of these facilities.
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... structures.4
Warning: you should not write hierarchical FITS header items as this violates the FITS standard (although data from outside sources may sometimes contain them).
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IMG Simple Image Data Access
Starlink User Note 160
P.W. Draper
R.F. Warren-Smith
3 March 2003
E-mail:P.W.Draper@durham.ac.uk

Copyright © 2000-2003 Council for the Central Laboratory of the Research Councils